Revolving metal chair.



PATENTED FEB. 21, 1905.

J. F. L. UHL. REVOLVING METAL CHAIR.

APPLICATION FILED SEPT. 12, 1903.

2 SHEETSSHEET l,

Wi /5 ffia/w PATENTED FEB. 21, 1905.

J. F. L. UHL. REVOLVING METAL CHAIR. APPLICATION FILED SEPT. 12, 1903.

2 BHEETSSHEBT 2.

' WZMiifi III! In! l Iv ALI Patented February 21, 1905.

UNITED STATES PATENT ()EFICE.

JOSEPH F. L. UllL, OF TOLEDO, OHIO, ASSIGNOR TO THE TOLEDO METAL FURNITURE COMPANY, OF TOLEDO, OHIO.

REVOLVING METAL CHAIR.

SPECIFICATION forming part of Letters Patent No. 782,932, dated February. 21, 1905.

Application filed September 12, 1903. Serial No. 172.883.

To all whom it "my concern:

Be it known that I, JOSEPH F. L. UHL, of Toinvented certain new and useful Improvements in Revolving Metal Chairs; and I do hereby declare that the following is a full, clear, and

the same being detached. Fig. 3 is a sectional view of the sheet-metal parts of the head ledo, county ,of Lucas, and State of Ohio, have exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and

to the figures ofreference marked thereon, which form part of this specification.

My invention relates to improvements in the construction of metal chairs, and particularly 1 5 to that class commonly termed revolving 1 chairs, in which the chair-seat is rotatable with reference to the chair-standards. Chairs of this classare at present in extensive use as type-writer and desk chairs in offices.

It is the object of my invention to provide an improved construction in chairs of this character whereby sheet metal, and preferably sheet-steel, may be largely employed, the sheet-metal parts being formed by means of 5 suitable dies, the cost of manufacture being therefore reduced to a minimum, owing to the rapidity with which the parts may be turned out.

A further object is to provide simple and 3 novel means for firmly clamping the parts together to insure great strength and rigidity.

Chairs embodying my improved construction may be readily taken apart and set up, so that large quantities of the chair parts may be shipped with great facility and at minimum expense to be assembled when they arrive at their destination.

With these objects in view and others which will appear as the nature of my invention is 4 better understood my invention comprises the novel combination, arrangement, and details of construction hereinafter shown, described, and particularly pointed out in the claims.

In the drawings, Figure l is a front elevation of a chair embodying my improved construction. Fig. 2 is a top plan View of the same, the chair-seat and the stem supporting of the chair, showing their relative arrangement prior to being assembled. Fig. 4 1s a transverse section on line .1 m, Fig. 2, showing the construction for securing the upper ends of the chair-standards and also showing the construction for bracing the same.

Referring to the parts,'l represents sheetmetal leg-standards having a general Ushaped cross-section. These, as well as the other sheet-metal parts of the chair, are preferably formed out of sheet-steel by means of suitable dies. The upper ends of the leg-standards are formed so as to adjoin each other when set up, and these ends are spread out or flared, as shown at 2, to assist in holding the standards in position i when they are assembled. The head for firmly securing theupper ends of the leg-standards comprises an outer and an inner spider, between which the leg-standards are clamped. and a sleeve with a nut thereon to engage the spiders and force them together. v

3 is the outer spider, having radial arms 4. the whole being stamped from a single piece of sheet metal, the arms at having an interior contour to receive the upper ends of the legstandards, the latter fitting snugly therein.

5 is an inner spider, also formed with radial arms 6, adapted to take inverted positions within the leg-standards, the ends of said arms coacting with the arms 4 of the outer spider to clamp the leg-standards between them. The arms of the outer'spider meet the arms of the inner spider at an angle, as shown, the two spiders when clamped together forming an extremely-rigid braced construction. Oentrally of each spider is an opening having rounded marginal edges '7 and 8, respectively, and 9 is a sleeve for clamping the spiders together, the same being provided with an enlargement 10 at one end and a shoulder 11, adapted to engage the margin of the opening in the outer spider, a nut 12 upon the sleeve, provided with a shoulder 13,in like manner engaging the margin of the opening in the inner spider. iflllull while the nut thereon is beingtightcued. the same may be provided with :1 lug 14,

To secure the sleeve 9 against roing. a plurality of U-shaped metal leg-standi ards having Haring ends disposed within the arranged toeuter a recess provideddn the having radial arms adapted to cooperate with margin of the opening in the outer spider. The nut 12 is provided with equidistant perforations 1.3 for the engagement of a spannerwrench. The same may, however, be formed hexagonal or provided with angular faces.

otherwise arranged to permit of turning by means of a wrench. centrally and preferably screw-threaded to receive the stem upon which the chair-seat is mounted. The precise manner of mounting the stem within the sleeve or the chair-seat upon the stem immaterial to my invention, various constructions being employed for this purpose. \Vithin the U-shaped leg-standards at intermediate positions between their respective ends are sheet-metal members 16, formed by means of dies and having enlarged lower portions 17, adapted to fit within the leg-standards, being secured in place by rivets 18, although other means may be employed forsecuring the members 16 within the legstandards. The upper portions of the members 16 are reduced, as shown at 19, a space intervening between the same and the inner faces of the leg-standards for the reception of a brace 20, formed from a band of steel or other metal. This brace is preferably in one piece, the ends meeting within one of the legstandards. bers are provided lips 21, inclined inwardly, as shown, to facilitate placing the brace in position. After the brace is placed in position the lips 21 may be bent outwardly, if desired, to retain the brace in position, although this operation is not essential, as the brace will remain in position without additional retaining means. I

From the foregoing description and reference to the drawings the exact manner of assembling the parts of the chair will be understood. lt will be seen that the co struction which I provide is extremely rigid and that there is no possibility of the parts becoming loosened or disengaged while in use. As constructed the parts of the chair may be readily taken apart for the purpose of refinishing when this becomes necessary, it being apparent that the metal parts may be nickled or finished in oxidized eifect to suit the taste of the purchaser.

The novelty, utility, and advantages of my invention will be apparent.

Having described my invention, what I claim, and desire to secure by Letters Patent, is

1. The improved construction in metal chairs, comprising an outer sheet-metal spider formed with radial arms and a central open- At the upper ends of the mem 'lhe-sleeve 9 is bored out arms of the outer spider, an inner sheet-metal spider also formed with a central opening and the arms of the outer spider to embrace the flaring ends of the leg-stamiards, and a sleeve extending through the openings in the spiders provided with clamping means for drawing the spiders together, substantially as described.

2. The improved construction in metal chairs, comprlsingan outer sheet-metal spider formed with integral radial arms and having a 3 central opening, a plurality of U-shaped,sheet metal leg-standards having flaring ends disposed within the arms of the outer spider, an inner sheet-metal spider, inverted relatively to the outer spider, having a central opening and also formed with radial arms to embrace the flaring ends of the leg-standards, and asleeve extending through the openings provided in the spiders having an enlargement at one end and a nut at the other adapted to engage the marginal edges of said openings to force the spiders together, substantially as described.

3. The improved construction in metal chairs, comprising an outer sheetmetal spider formed with integral radial arms and having a central opening, a plurality of U-shaped,sheet metal leg-standards having flaring ends disposed within the arms of the outer spider, an inner sheet-metal spider, inverted relatively to the outer spider, having a central opening and also formed with radial arms to embrace the flaring ends of the leg-standards, a sleeve extending through the openings in the spiders provided with means for drawing the spiders together, and interengaging parts upon the sleeve and one of the spiders adapted to hold the sleeve against rotation during the opera tion of said clamping means, substantially as described.

4. The improved construction in metal chairs, comprising a plurality of U-shaped sheet-metal leg-standards clamped together at their upper ends, a sheet-metal member secured within each leg-standard having an enlarged portion to fit the interior of the legstandards and also having an upwardly-extending reduced engaging portion, and a brace arranged between. the ,leg'standards having bent portions adapted to fit within the legstandards and be detachably secured thereto by the sheet-metal members therein, substantially as described.

5. The improved construction in metal chairs, comprising a plurality of U-shaped sheet metal leg-standards, clamped together at their upper ends, a sheet-metal member secured within each leg-standard having an enlarged portion to fit the interior of the legstandardsand having a reduced portion, a onepiece brace arranged between the leg-standards and fitting snugly between the reduced portion of said metal members and the legstandards, and upwardly-extending lips upon said metal members adapted to be bent to retain the brace for the leg-standards in position, substantially as described.

In testimony that I claim the foregoing as my own 1 aflix my signature in presence of two Witnesses.

JOSEPH F. L. UHL.

Witnesses. I

CARL H. KELLER, CLEMENT R. UHL. 

